package com.leilei.eduservice.controller;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.leilei.commonutils.R;
import com.leilei.eduservice.entity.EduTeacher;
import com.leilei.eduservice.entity.vo.TeacherQuery;
import com.leilei.eduservice.service.EduTeacherService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2023-04-29
 */
@Api(tags = "讲师管理")
@RestController
@RequestMapping("/eduservice/edu-teacher")

public class EduTeacherController {

    //注入service
    @Autowired
    private EduTeacherService eduTeacherService;


    /**
     * 1、查询讲师表所有数据
     * rest风格
     */
    @ApiOperation(value = "所有讲师列表")
    @GetMapping("findAll")
    public R findAllTeacher(){
        //调用service的方法实现查询所有的操作

//        try {
//            int i = 10/0;
//        } catch (Exception e) {
//            //执行自定义异常
//            throw new GuliException(20001,"执行了自定义异常处理...");
//        }

        List<EduTeacher> list = eduTeacherService.list(null);
        return R.ok().data("items",list);
    }



    /**
     * 2、讲师逻辑删除的方法
     */
    @DeleteMapping("{id}")
    @ApiOperation(value = "逻辑删除讲师")
    public R removeTeacher(
                    @ApiParam(name = "id",value = "讲师ID",required = true)
                    @PathVariable String id){
        boolean flag = eduTeacherService.removeById(id);
        if (flag){
            return R.ok();
        }else {
            return R.error();
        }
    }


    /**
     * 3、分页查询讲师的方法
     * current 当前页
     * limit 每页记录数
     */
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageListTeacher(@PathVariable long current,
                             @PathVariable long limit){

        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

        //调用方法实现分页
        //调用方法时候，底层封装，把分页所有数据封装到pageTeacher对象里面
        eduTeacherService.page(pageTeacher,null);

        long total = pageTeacher.getTotal();    //总记录数
        List<EduTeacher> records = pageTeacher.getRecords();     //数据list集合

        Map map = new HashMap();
        map.put("total",total);
        map.put("rows",records);

        return R.ok().data(map);
        //return R.ok().data("total",total).data("rows",records);
    }

    /**
     * 4、条件查询带分页的方法
     */
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(
            @PathVariable long current,
            @PathVariable long limit,
            @RequestBody(required = false) TeacherQuery teacherQuery){

        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

        //构造条件
        QueryWrapper<EduTeacher> queryWrapper = new QueryWrapper();

        //多条件组合查询
        //判断条件值是否为空，如果不为空拼接条件
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();

        if (!StringUtils.isEmpty(name)){
            //构建条件
            queryWrapper.like("name",name);
        }
        if (!StringUtils.isEmpty(level)){
            //构建条件
            queryWrapper.eq("level",level);
        }
        if (!StringUtils.isEmpty(begin)){
            //构建条件
            queryWrapper.ge("gmt_create",begin);
        }
        if (!StringUtils.isEmpty(end)){
            //构建条件
            queryWrapper.le("gmt_create",end);
        }

        //排序
        queryWrapper.orderByDesc("gmt_create");

        //调用方法实现条件查询分页
        eduTeacherService.page(pageTeacher,queryWrapper);

        long total = pageTeacher.getTotal();    //总记录数
        List<EduTeacher> records = pageTeacher.getRecords();     //数据list集合

        return R.ok().data("total",total).data("rows",records);

    }


    /**
     * 5、添加讲师的方法
     */
    @PostMapping("addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher){
        boolean save = eduTeacherService.save(eduTeacher);
        if (save){
            return R.ok();
        }else {
            return R.error();
        }
    }


    /**
     * 6、根据讲师id进行查询
     * 实现数据回显
     */
    @GetMapping("getTeacher/{id}")
    public R getTeacher(@PathVariable String id){
        EduTeacher eduTeacher = eduTeacherService.getById(id);
        return R.ok().data("teacher",eduTeacher);
    }


    /**
     * 7、讲师修改方法
     */
    @PostMapping("updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean flag = eduTeacherService.updateById(eduTeacher);
        if (flag){
            return R.ok();
        }else {
            return R.error();
        }
    }
}

